EP0156399A3 - Fluid operated pump displacement control system - Google Patents

Fluid operated pump displacement control system Download PDF

Info

Publication number
EP0156399A3
EP0156399A3 EP85103852A EP85103852A EP0156399A3 EP 0156399 A3 EP0156399 A3 EP 0156399A3 EP 85103852 A EP85103852 A EP 85103852A EP 85103852 A EP85103852 A EP 85103852A EP 0156399 A3 EP0156399 A3 EP 0156399A3
Authority
EP
European Patent Office
Prior art keywords
control system
displacement control
fluid operated
pump displacement
operated pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP85103852A
Other versions
EP0156399B1 (en
EP0156399A2 (en
Inventor
Teruo Akiyama
Katsuyuki Sasaki
Takaichi Saigo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP59060841A external-priority patent/JPS60204987A/en
Priority claimed from JP59251992A external-priority patent/JPH0658111B2/en
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Publication of EP0156399A2 publication Critical patent/EP0156399A2/en
Publication of EP0156399A3 publication Critical patent/EP0156399A3/en
Application granted granted Critical
Publication of EP0156399B1 publication Critical patent/EP0156399B1/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/002—Hydraulic systems to change the pump delivery
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/12—Parameters of driving or driven means
    • F04B2201/1201—Rotational speed of the axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/12—Parameters of driving or driven means
    • F04B2201/1202—Torque on the axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/12—Parameters of driving or driven means
    • F04B2201/1204—Position of a rotating inclined plate

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
EP85103852A 1984-03-30 1985-03-29 Fluid operated pump displacement control system Expired EP0156399B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP60841/84 1984-03-30
JP59060841A JPS60204987A (en) 1984-03-30 1984-03-30 Controller for variable-capacity type hydraulic pump
JP251992/84 1984-11-30
JP59251992A JPH0658111B2 (en) 1984-11-30 1984-11-30 Discharge amount control device for variable displacement hydraulic pump

Publications (3)

Publication Number Publication Date
EP0156399A2 EP0156399A2 (en) 1985-10-02
EP0156399A3 true EP0156399A3 (en) 1987-10-28
EP0156399B1 EP0156399B1 (en) 1990-06-13

Family

ID=26401895

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85103852A Expired EP0156399B1 (en) 1984-03-30 1985-03-29 Fluid operated pump displacement control system

Country Status (3)

Country Link
US (1) US4637781A (en)
EP (1) EP0156399B1 (en)
DE (1) DE3578197D1 (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171757B (en) * 1985-02-28 1989-06-14 Komatsu Mfg Co Ltd Method of controlling an output of an internal combustion engine and a variabledisplacement hydraulic pump driven by the engine
DE3780292T2 (en) * 1986-08-15 1993-01-07 Komatsu Mfg Co Ltd CONTROL UNIT OF A HYDRAULIC PUMP.
EP0282138B1 (en) * 1987-03-09 1992-06-10 Hitachi Construction Machinery Co., Ltd. Hydraulic drive circuit system
US4884401A (en) * 1988-08-30 1989-12-05 Sundstrand Corp. Three position dual failure shut-off valve system
JP2578371B2 (en) * 1989-09-22 1997-02-05 株式会社小松製作所 Displacement control device for variable displacement pump
KR950019129A (en) * 1993-12-30 1995-07-22 김무 Engine-pump control device and method of hydraulic construction machine
US5515829A (en) * 1994-05-20 1996-05-14 Caterpillar Inc. Variable-displacement actuating fluid pump for a HEUI fuel system
US5562424A (en) * 1995-09-12 1996-10-08 Caterpillar Inc. Pump displacement control for a variable displacement pump
US5567123A (en) * 1995-09-12 1996-10-22 Caterpillar Inc. Pump displacement control for a variable displacement pump
JPH09177679A (en) * 1995-12-22 1997-07-11 Hitachi Constr Mach Co Ltd Pump torque control device
JPH10220359A (en) * 1997-01-31 1998-08-18 Komatsu Ltd Controller for variable capacity pump
US5967756A (en) * 1997-07-01 1999-10-19 Caterpillar Inc. Power management control system for a hydraulic work machine
JP3995227B2 (en) * 1999-01-21 2007-10-24 株式会社スギノマシン Liquid pressurizer
US6202014B1 (en) * 1999-04-23 2001-03-13 Clark Equipment Company Features of main control computer for a power machine
JP2001295803A (en) 2000-04-10 2001-10-26 Hitachi Constr Mach Co Ltd Hydraulic driving device for work machine
US20060198736A1 (en) * 2005-03-01 2006-09-07 Caterpillar Inc. Pump control system for variable displacement pump
US7797092B2 (en) * 2006-11-06 2010-09-14 Caterpillar Inc Method and system for controlling machine power
JP4424370B2 (en) * 2007-05-02 2010-03-03 ダイキン工業株式会社 Hydraulic unit and construction machine having the same
CN101932814B (en) 2008-02-18 2013-06-12 株式会社小松制作所 Engine control device and engine control method
CN103328822B (en) * 2010-11-17 2016-08-10 Ksb股份公司 For the variable speed ground method of volume adjusted pumping unit and adjusting means and displacement pump assembly
US9086143B2 (en) 2010-11-23 2015-07-21 Caterpillar Inc. Hydraulic fan circuit having energy recovery
CN103306957A (en) * 2013-06-13 2013-09-18 大连海事大学 Pneumatic booster pump embedded controller based on singlechip and control method
CN105179353B (en) * 2015-10-27 2017-06-23 安徽柳工起重机有限公司 Variable pump HYDRAULIC CONTROL SYSTEM engine idling exempts from blanket
CN109113979B (en) * 2018-07-23 2021-06-01 珠海格力电器股份有限公司 Compressor control method, control device and control system
CN109578370A (en) * 2018-12-05 2019-04-05 淮南市金德实业有限公司 A kind of combined liquid press mechanism that resin anchoring agent produces and uses
CN115324150B (en) * 2022-08-25 2023-09-05 江苏徐工工程机械研究院有限公司 Control method of backhoe loader and backhoe loader

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1921298A1 (en) * 1969-04-25 1970-11-05 Rauch Fa Constantin Device for controlling the delivery rate of adjustable axial piston pumps
DE2154328A1 (en) * 1970-11-30 1972-05-31 Orsta Hydraulik Betr Ind Veb K CONTROL DEVICE FOR HYDROSTATIC GEARS
FR2141334A5 (en) * 1971-06-10 1973-01-19 Sperry Rand Corp
DE2251904A1 (en) * 1972-10-23 1974-04-25 Weserhuette Ag Eisenwerk LIMIT LOAD CONTROL FOR HYDRAULIC DRIVES
FR2318328A1 (en) * 1975-07-15 1977-02-11 Bosch Gmbh Robert DEVICE FOR PREVENTING OVERLOADING OF AN ADJUSTABLE HYDROSTATIC PUMP DRIVEN BY AN INTERNAL COMBUSTION ENGINE
US4189921A (en) * 1976-07-02 1980-02-26 Eaton Corporation Hydraulic controller
GB2104250A (en) * 1981-08-21 1983-03-02 Bosch Gmbh Robert An electrohydraulic adjusting device for an hydrostatic machine
EP0112267A1 (en) * 1982-12-16 1984-06-27 Abex Corporation Servo control variable displacement pressure compensated pump

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3875849A (en) * 1972-09-11 1975-04-08 Applied Power Inc Electro-hydraulic proportional servo actuator
DE2331617A1 (en) * 1973-06-22 1975-01-16 Bosch Gmbh Robert CONTROL DEVICE FOR HYDROPUMPS
DE2363480A1 (en) * 1973-12-20 1975-06-26 Bosch Gmbh Robert Constant flow pump regulation by two actuating cylinders - has three way valve feeding one, pump itself feeding other cylinder
US3935706A (en) * 1974-07-22 1976-02-03 General Signal Corporation Hydraulic control system
US3963378A (en) * 1975-06-04 1976-06-15 Caterpillar Tractor Co. Part throttle control -- pump override
US4091617A (en) * 1977-05-11 1978-05-30 Eaton Corporation Hydraulic controller
JPS5543246A (en) * 1978-09-22 1980-03-27 Komatsu Ltd Volume controller of variable hydraulic pump
US4274257A (en) * 1979-01-08 1981-06-23 Eaton Corporation Anti-stall controller
JPS56159580A (en) * 1980-05-13 1981-12-08 Hitachi Constr Mach Co Ltd Method of controlling system including internal combustion engine and hydraulic pump
US4498847A (en) * 1982-06-29 1985-02-12 Kabushiki Kaisha Komatsu Seisakusho Control system for variable displacement hydraulic pumps

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1921298A1 (en) * 1969-04-25 1970-11-05 Rauch Fa Constantin Device for controlling the delivery rate of adjustable axial piston pumps
DE2154328A1 (en) * 1970-11-30 1972-05-31 Orsta Hydraulik Betr Ind Veb K CONTROL DEVICE FOR HYDROSTATIC GEARS
FR2141334A5 (en) * 1971-06-10 1973-01-19 Sperry Rand Corp
DE2251904A1 (en) * 1972-10-23 1974-04-25 Weserhuette Ag Eisenwerk LIMIT LOAD CONTROL FOR HYDRAULIC DRIVES
FR2318328A1 (en) * 1975-07-15 1977-02-11 Bosch Gmbh Robert DEVICE FOR PREVENTING OVERLOADING OF AN ADJUSTABLE HYDROSTATIC PUMP DRIVEN BY AN INTERNAL COMBUSTION ENGINE
US4189921A (en) * 1976-07-02 1980-02-26 Eaton Corporation Hydraulic controller
GB2104250A (en) * 1981-08-21 1983-03-02 Bosch Gmbh Robert An electrohydraulic adjusting device for an hydrostatic machine
EP0112267A1 (en) * 1982-12-16 1984-06-27 Abex Corporation Servo control variable displacement pressure compensated pump

Also Published As

Publication number Publication date
US4637781A (en) 1987-01-20
EP0156399B1 (en) 1990-06-13
DE3578197D1 (en) 1990-07-19
EP0156399A2 (en) 1985-10-02

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